Question

Which literal equation is not equivalent to x = 2y + z ?

x - 2y = z

x-z=2y

y = x-z/2

x + 2y = z

Answer 1

x - 2y = z -- add 2y to each side
x = 2y + z
this is equivalent...so its not this one

x - z = 2y -- add z to both sides
x = 2y + z
this is equivalent....not this one

y = (x - z) / 2 -- multiply by 2
2y = x - z -- add z to both sides
2y + z = x or x = 2y + z
this is equivalent...not this one

x + 2y = z -- subtract 2y from both sides
x = -2y + z
this is NOT equivalent.....IT IS THIS ONE